> 1. To get my boat in and out of the marina (which could involve 3 km
> against the wind, as we are between two peninsulars).
As always, there are tradeoffs, as at some point windspeed overwhelms
even the most powerful of drive systems, which is why I consider the
zero-velocity driving force (bollard test) to be a significant
parameter for consideration. On my cat I had actually measured the
forward and reverse thrust while tied to the dock and also empirically
determined the maximum windspeed at which the boat would 'stall out'.
Above that windspeed I would simply drop the anchor and go to sleep
and wait until the wind abated. :-)
If you have to power straight upwind, then in your scenario you
perhaps need to figure out whether you can go the 3km against what
windspeed for a given battery capacity.
JoeS.
Posted by: Joe Siudzinski <siudzinski@telis.org>
| Reply via web post | • | Reply to sender | • | Reply to group | • | Start a New Topic | • | Messages in this topic (6) |
No comments:
Post a Comment